Multifunctional part testing equipment

Abstract

The utility model discloses a multifunctional part test device which comprises a shell, a button is fixedly installed on one side of the bottom end of the front face of the shell, a display screen is fixedly installed in the middle of the bottom end of the front face of the shell, and an adjustable voltage adjusting knob is fixedly installed on the other side of the bottom end of the front face of the shell. A single-chip microcomputer is used for control, an LCD liquid crystal screen menu is used for displaying, a key is used for selecting functions, independent sockets are arranged for testing various parts, a signal output indicator lamp and a socket position indicator lamp are arranged beside each socket, and after the tested parts are selected through the keys, the position indicator lamp beside the corresponding socket is lightened, the signal output indicator lamp flickers, and the socket position indicator lamp and the socket position indicator lamp are switched on. An ignition coil tester, an oil sprayer tester, a stepping motor tester, an electromagnetic valve tester and PWM signal output are combined together, the IGBT module testing function is added, operation is convenient, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery test technical field, concretely is a kind of multifunctional component test equipment. BACKGROUND

[0002] Ignition coil is important component in automobile engine ignition system, its function is to convert low voltage into high voltage, to ignite mixed gas in cylinder, ignition coil tester is specially used to test ignition coil, torch is mainly used to ignite fuel in automobile or other industrial applications, fuel injector tester is specially used to test fuel injector, stepper motor is used to accurately control position and speed in automobile and other automation equipment, stepper motor driver is specially used to drive stepper motor, sensor simulator tests automobile sensor, is specially used to simulate sensor signal, to complete component test.

[0003] However, the traditional test equipment has the following shortcomings:

[0004] Now on the market automobile, motorcycle, engineering machinery component test equipment function is single, if a variety of components need to be tested, need to use multiple devices, use operation is inconvenient. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of multifunctional component test equipment to solve the problem of above-mentioned background art that now on the market automobile, motorcycle, engineering machinery component test equipment function is single, if a variety of components need to be tested, need to use multiple devices, use operation is inconvenient.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of multifunctional component test equipment, including shell, the top of the front of the shell is fixed from right to left in sequence Installation has IGBT module test socket, stepper motor test socket, PWM signal output socket, fuel injector solenoid test socket, positive trigger ignition coil test socket and negative trigger ignition coil test socket, one side of the bottom of the front of the shell is fixedly installed with button, the middle part of the bottom of the front of the shell is fixedly installed with display screen, the other side of the bottom of the front of the shell is fixedly installed with adjustable voltage adjusting knob, adjustable voltage output socket is fixedly installed on the shell above adjustable voltage adjusting knob.

[0007] Preferably, the housing is fixedly installed with an IGBT module detection indicator light on one side of the IGBT module test socket, the housing is fixedly installed with an IGBT module socket position indicator light and an IGBT module signal indicator light below the IGBT module test socket, the housing is fixedly installed with a stepper motor A-phase signal indicator light, a stepper motor socket position indicator light and a stepper motor B-phase signal indicator light below the stepper motor test socket, the housing is fixedly installed with a PWM signal socket position indicator light and a PWM signal indicator light below the PWM signal output socket, the housing is fixedly installed with an oil injector electromagnetic valve position indicator light and an oil injector electromagnetic valve signal indicator light below the oil injector electromagnetic valve test socket, the housing is fixedly installed with a positive trigger ignition coil signal indicator light below the positive trigger ignition coil test socket, the housing is fixedly installed with a negative trigger ignition coil signal indicator light below the negative trigger ignition coil test socket, and the housing is fixedly installed with an ignition coil socket position indicator light on one side of the negative trigger ignition coil signal indicator light.

[0008] Preferably, the adjustable voltage output socket is provided with an adjustable voltage circuit and a voltage stabilizing circuit, the adjustable voltage circuit comprises chip U1, capacitor C2, capacitor C3, diode D1, indicator lamp L2, variable resistor W1, resistor R1, capacitor C5 and socket J1, one end of the socket J1 is connected with one end of the variable resistor W1 and one end of the capacitor C5, the other end of the variable resistor W1 is connected with one end of the indicator lamp L2 and one end of the resistor R1, the connection point of the variable resistor W1 and the resistor R1 and the other end of the indicator lamp L2 are connected with one end of the chip U1, the two ends of the connection point of the indicator lamp L2 and the chip U1 are connected with the two ends of the diode D1, the other end of the capacitor C2 and the two ends of the capacitor C3 are connected with the other end of the chip U1, the other end of the capacitor C2, the other end of the resistor R1, the other end of the capacitor C5 and the 2 end pin of the socket J1 are grounded, the voltage stabilizing circuit comprises chip U2, capacitor C4, diode D2, indicator lamp L1, capacitor C6 and capacitor C1, one end of the diode D2 and the 2 end pin of the chip U2 are connected with one end of the indicator lamp L1, the 3 end pin of the chip U2 and one end of the capacitor C6 and one end of the capacitor C1 are connected with the other end of the indicator lamp L1, the 1 end pin of the chip U2 is connected with one end of the capacitor C4, the 8 end pin of the chip U2, the 7 end pin of the chip U2, the 6 end pin of the chip U2 and the 5 end pin of the chip U2, the 4 end pin of the chip U2, the other end of the diode D2, the other end of the capacitor C6, the other end of the capacitor C1 and the other end of the capacitor C4 are grounded, VCC power input positive, GND power ground, input voltage range, DC 12-24V, adjustable voltage output range 1.2-12V, adjustable voltage output by the socket J1, chip U2, capacitor C4, diode D2, indicator lamp L1, capacitor C6 and capacitor C1 form a DC 5V voltage stabilizing circuit for internal circuit.

[0009] Preferably, the positive trigger ignition coil test socket is provided with resistor R3, resistor R4, triode Q2, resistor R7, indicator lamp L3 and socket J2, the 2 end pin of the socket J2 is connected with one end of the resistor R4 and one end of the indicator lamp L3, the other end of the resistor R4 is connected with one end of the resistor R3 and one end of the triode Q2, the other end of the indicator lamp L3 is connected with one end of the resistor R7, the other end of the resistor R7, the other end of the triode Q2 and the 3 end pin of the socket J2 are grounded, for testing the positive trigger ignition coil, the ignition coil is integrated with a power amplifier, the indicator lamp L3 is a positive trigger signal indicator lamp, and the socket J2 is a positive trigger ignition coil socket.

[0010] Preferably, the negative trigger ignition coil test socket is provided with resistance R2, resistance R5, triode Q3, triode Q1, resistance R6, indicator lamp L4 and socket J3, the 2 end pin of the socket J3 is connected with the 1 end pin of the triode Q1, the 2 end pins of the triode Q1 are respectively connected with one end of the resistance R5 and one end of the resistance R6, the other end of the resistance R6 is connected with one end of the indicator lamp L4, the other end of the resistance R5 and one end of the resistance R2 are both connected with one end of the triode Q3, the other end of the indicator lamp L4, the other end of the triode Q3, the 3 end pin of the triode Q1 and the 3 end pin of the socket J3 are all grounded, which is used for testing that the negative trigger ignition coil has no power amplifier inside, the indicator lamp L4 is a negative trigger signal indicator lamp, and the socket J3 is a negative trigger ignition coil socket; the pulse signal output by the chip U3 single-chip microcomputer is input to the triode Q2 and the triode Q3 at the same time, is amplified by the triode Q2, and is output by the socket J2 socket, which is used for testing the positive trigger ignition coil; the pulse signal output by the chip U3 single-chip microcomputer is amplified by the triode Q3, drives the triode Q1 power tube, and is output by the socket J3 socket, which is used for testing the negative trigger ignition coil.

[0011] Preferably, the fuel injector electromagnetic valve test socket is provided with resistance R8, resistance R9, triode Q5, triode Q4, resistance R10, indicator lamp L10 and socket J4, the 2 end pin of the socket J4 is connected with the 1 end pin of the triode Q4, the 2 end pins of the triode Q4 are respectively connected with one end of the resistance R9 and one end of the resistance R10, the other end of the resistance R10 is connected with one end of the indicator lamp L10, the other end of the resistance R9 is respectively connected with one end of the resistance R8 and one end of the triode Q5, the other end of the triode Q5, the 3 end pin of the triode Q4 and the other end of the indicator lamp L10 are all grounded, the indicator lamp L10 is a signal indicator lamp, the socket J4 is a fuel injector and electromagnetic valve socket, the pulse signal output by the chip U3 single-chip microcomputer is amplified by the triode Q5, drives the triode Q4 power tube, and is output by the socket J4 socket, which is used for testing the fuel injector or the electromagnetic valve.

[0012] Preferably, the PWM signal output socket is provided with resistance R16, resistance R19, triode Q6, resistance R21, indicator lamp L11 and socket J5, the 1 end pin of the socket J5 is respectively connected with one end of the resistance R16 and one end of the resistance R21, the other end of the resistance R21 is connected with one end of the indicator lamp L11, the other end of the resistance R16 is respectively connected with one end of the resistance R19 and one end of the triode Q6, the other end of the indicator lamp L11, the other end of the triode Q6 and the 2 end pin of the socket J5 are all grounded, the indicator lamp L11 is a signal indicator lamp, and the socket J5 is a PWM signal output socket, the pulse signal output by the chip U3 single-chip microcomputer is amplified by the triode Q6, and the PWM signal is output by the socket J5 socket.

[0013] Preferably, the IGBT module test socket is provided with resistance R25, resistance R26, triode Q7, resistance R29, indicator lamp L13, resistance R23, indicator lamp L12, resistance R17 and socket J6, one end pin of the socket J6 is connected with one end of the resistance R17 and one end of the indicator lamp L12 respectively, the other end of the resistance R17 and the other end of the indicator lamp L12 are connected with two ends of the resistance R23 respectively, 2 end pin of the socket J6 is connected with one end of the resistance R26 and one end of the resistance R29 respectively, the other end of the resistance R29 is connected with one end of the indicator lamp L13, the other end of the resistance R26 is connected with one end of the resistance R25 and one end of the triode Q7 respectively, the other end of the triode Q7, the other end of the indicator lamp L13 and 3 end pin of the socket J6 are grounded, the indicator lamp L13 is a signal indicator lamp, the indicator lamp L12 is an IGBT module detection indicator lamp, the resistance R17 is a power 5W resistance with a resistance value of 220 ohms, the socket J6 is an IGBT module socket, 1 pin of the socket J6 is connected with a collector C of an IGBT module, 2 pin is connected with a gate G of the IGBT module, 3 pin is connected with an emitter E of the IGBT module, the chip U3 single-chip microcomputer outputs a pulse signal, which is amplified by the triode Q7 and then output by the socket J6 socket, to drive the IGBT module to work, the resistance R17 is a load of the measured IGBT module, if the internal circuit of the measured IGBT module is broken, the indicator lamp L12 does not light; if the IGBT module is short-circuited, the indicator lamp L12 is always on; the adjustable voltage is added to the collector of the triode Q7 through the resistance R25, the output signal voltage is adjustable from 1.2V to 12V, the opening voltage value of the measured IGBT module can be tested by adjusting the adjustable voltage; the circuit not only tests the IGBT module, but also tests the IGBT single tube and the field effect tube.

[0014] Preferably, the stepping motor test socket is provided with chip U4, resistance R32, indicator lamp L14, indicator lamp L15, resistance R33 and socket J7, the socket J7 is connected with the chip U4 in parallel, 4 end pin of the socket J7 is connected with one end of the indicator lamp L15, the other end of the indicator lamp L15 is connected with one end of the resistance R33, 1 end pin of the socket J7 is connected with one end of the indicator lamp L14, the other end of the indicator lamp L14 is connected with one end of the resistance R32, the other end of the resistance R32, the other end of the resistance R33 and one end of the chip U4 are grounded, the chip U4 is a special driving chip for the stepping motor, the socket J7 is a stepping motor socket, the indicator lamp L14 / indicator lamp L15 are A phase and B phase signal indicator lamps of the stepping motor respectively; the chip U3 single-chip microcomputer outputs a pulse control signal to the chip U4 stepping motor driving chip, and drives the measured stepping motor through the socket J7 socket.

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] 1. Single-chip microcomputer control, LCD liquid crystal screen menu display, button selection function, test various components have separate socket, there is a signal output indicator light and socket position indicator light beside each socket, when the selected components are tested through the button, the corresponding socket position indicator light beside the socket is lit, the signal output indicator light flashes, the ignition coil tester, the oil injector tester, the stepper motor tester, the electromagnetic valve tester, the PWM signal output is combined together, and the IGBT module test function is added, the operation is convenient, and the practicality is high;

[0017] 2. The ignition coil, the oil injector, the electromagnetic valve, the stepper motor and the IGBT module test function are combined together, and the PWM signal is output, so that one device has multiple purposes;

[0018] 3. Each function has an independent socket, and a socket position indicator light and a signal output indicator light are arranged beside the socket. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view of the utility model;

[0020] Figure 2 It is a second front view of the utility model;

[0021] Figure 3 It is a circuit diagram of the adjustable voltage circuit of the utility model;

[0022] Figure 4 It is a circuit diagram of the voltage stabilizing circuit of the utility model;

[0023] Figure 5 It is a circuit diagram of the utility model;

[0024] Figure 6 It is a circuit diagram of the positive trigger ignition coil test socket of the utility model;

[0025] Figure 7 It is a circuit diagram of the negative trigger ignition coil test socket of the utility model;

[0026] Figure 8 It is a circuit diagram of the oil injector electromagnetic valve test socket of the utility model;

[0027] Figure 9 It is a circuit diagram of the PWM signal output socket of the utility model;

[0028] Figure 10 It is a circuit diagram of the IGBT module test socket of the utility model;

[0029] Figure 11 It is a circuit diagram of the stepper motor test socket of the utility model.

[0030] In the figure: 1, the shell; 2, button; 3, IGBT module test socket; 4, stepper motor test socket; 5, PWM signal output socket; 6, fuel injector solenoid test socket; 7, positive trigger ignition coil test socket; 8, negative trigger ignition coil test socket; 9, adjustable voltage output socket; 10, adjustable voltage adjustment knob; 11, display screen; 12, IGBT module detection indicator light; 13, negative trigger ignition coil signal indicator light; 14, ignition coil socket position indicator light; 15, positive trigger ignition coil signal indicator light; 16, fuel injector solenoid position indicator light; 17, fuel injector solenoid signal indicator light; 18, PWM signal socket position indicator light; 19, PWM signal indicator light; 20, stepper motor A phase signal indicator light; 21, stepper motor socket position indicator light; 22, stepper motor B phase signal indicator light; 23, IGBT module socket position indicator light; 24, IGBT module signal indicator light. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0032] Please refer to Figures 1-11 The utility model provides a kind of multifunctional component test equipment, including shell 1, the top of the front of shell 1 is fixedly installed with IGBT module test socket 3, stepper motor test socket 4, PWM signal output socket 5, fuel injector solenoid test socket 6, positive trigger ignition coil test socket 7 and negative trigger ignition coil test socket 8 from right to left in sequence, the side of the bottom of the front of shell 1 is fixedly installed with button 2, the middle of the bottom of the front of shell 1 is fixedly installed with display screen 11, the other side of the bottom of the front of shell 1 is fixedly installed with adjustable voltage adjustment knob 10, adjustable voltage output socket 9 is fixedly installed on shell 1 and located above adjustable voltage adjustment knob 10.

[0033] The IGBT module detection indicator 12 is fixedly installed on the shell 1 at one side of the IGBT module test socket 3, the IGBT module socket position indicator 23 and the IGBT module signal indicator 24 are fixedly installed on the shell 1 below the IGBT module test socket 3, the stepper motor A-phase signal indicator 20, the stepper motor socket position indicator 21 and the stepper motor B-phase signal indicator 22 are fixedly installed on the shell 1 below the stepper motor test socket 4, the PWM signal socket position indicator 18 and the PWM signal indicator 19 are fixedly installed on the shell 1 below the PWM signal output socket 5, the injector electromagnetic valve position indicator 16 and the injector electromagnetic valve signal indicator 17 are fixedly installed on the shell 1 below the injector electromagnetic valve test socket 6, the positive trigger ignition coil signal indicator 15 is fixedly installed on the shell 1 below the positive trigger ignition coil test socket 7, the negative trigger ignition coil signal indicator 13 is fixedly installed on the shell 1 below the negative trigger ignition coil test socket 8, and the ignition coil socket position indicator 14 is fixedly installed on the shell 1 at one side of the negative trigger ignition coil signal indicator 13.

[0034] The adjustable voltage output socket 9 is provided with an adjustable voltage circuit and a voltage stabilizing circuit. The adjustable voltage circuit comprises a chip U1, a capacitor C2, a capacitor C3, a diode D1, an indicator lamp L2, a variable resistor W1, a resistor R1, a capacitor C5 and a socket J1. The one end pin of the socket J1 is connected with one end of the variable resistor W1 and one end of the capacitor C5 respectively. The other end of the variable resistor W1 is connected with one end of the indicator lamp L2 and one end of the resistor R1 respectively. The connection point of the variable resistor W1 and the resistor R1 and the other end of the indicator lamp L2 are connected with one end of the chip U1. The two ends of the connection point of the indicator lamp L2 and the chip U1 are connected with the two ends of the diode D1 respectively. The other end of the chip U1 is connected with one end of the capacitor C2 and the two ends of the capacitor C3 respectively. The other end of the capacitor C2, the other end of the resistor R1, the other end of the capacitor C5 and the two end pin of the socket J1 are grounded. The voltage stabilizing circuit comprises a chip U2, a capacitor C4, a diode D2, an indicator lamp L1, a capacitor C6 and a capacitor C1. One end of the diode D2 and the two end pin of the chip U2 are connected with one end of the indicator lamp L1. The three end pin of the chip U2, one end of the capacitor C6 and one end of the capacitor C1 are connected with the other end of the indicator lamp L1. The one end pin of the chip U2 is connected with one end of the capacitor C4. The eight end pin of the chip U2, the seven end pin of the chip U2, the six end pin of the chip U2 and the five end pin of the chip U2, the four end pin of the chip U2, the other end of the diode D2, the other end of the capacitor C6, the other end of the capacitor C1 and the other end of the capacitor C4 are grounded. The VCC power supply input positive pole, the GND power supply ground, the input voltage range is 12-24V, the adjustable voltage output range is 1.2-12V, the adjustable voltage is output by the socket J1, and the chip U2, the capacitor C4, the diode D2, the indicator lamp L1, the capacitor C6 and the capacitor C1 form a DC 5V voltage stabilizing circuit for internal circuit.

[0035] The positive trigger ignition coil test socket 7 is provided with a resistor R3, a resistor R4, a triode Q2, a resistor R7, an indicator lamp L3 and a socket J2. The two end pin of the socket J2 is connected with one end of the resistor R4 and one end of the indicator lamp L3 respectively. The other end of the resistor R4 is connected with one end of the resistor R3 and one end of the triode Q2 respectively. The other end of the indicator lamp L3 is connected with one end of the resistor R7. The other end of the resistor R7, the other end of the triode Q2 and the three end pin of the socket J2 are grounded. The positive trigger ignition coil test socket 7 is used for testing the positive trigger ignition coil. The positive trigger ignition coil integrates a power amplifier in the internal ignition coil. The indicator lamp L3 is a positive trigger signal indicator lamp. The socket J2 is a positive trigger ignition coil socket.

[0036] The negative trigger ignition coil test socket 8 is provided with a resistor R2, a resistor R5, a triode Q3, a triode Q1, a resistor R6, an indicator lamp L4 and a socket J3, the 2 end pins of the socket J3 are connected with the 1 end pin of the triode Q1, the 2 end pins of the triode Q1 are connected with one end of the resistor R5 and one end of the resistor R6 respectively, the other end of the resistor R6 is connected with one end of the indicator lamp L4, the other end of the resistor R5 and one end of the resistor R2 are connected with one end of the triode Q3, the other end of the indicator lamp L4, the other end of the triode Q3, the 3 end pin of the triode Q1 and the 3 end pin of the socket J3 are grounded, which is used for testing that the negative trigger ignition coil has no power amplifier inside, the indicator lamp L4 is a negative trigger signal indicator lamp, and the socket J3 is a negative trigger ignition coil socket; the pulse signal output by the chip U3 single-chip microcomputer is input to the triode Q2 and the triode Q3 simultaneously, is amplified by the triode Q2, is output by the socket J2 socket, is used for testing the positive trigger ignition coil, is amplified by the triode Q3 after being output by the chip U3 single-chip microcomputer, drives the triode Q1 power tube, is output by the socket J3 socket, and is used for testing the negative trigger ignition coil.

[0037] The fuel injector electromagnetic valve test socket 6 is provided with a resistor R8, a resistor R9, a triode Q5, a triode Q4, a resistor R10, an indicator lamp L10 and a socket J4, the 2 end pins of the socket J4 are connected with the 1 end pin of the triode Q4, the 2 end pins of the triode Q4 are connected with one end of the resistor R9 and one end of the resistor R10 respectively, the other end of the resistor R10 is connected with one end of the indicator lamp L10, the other end of the resistor R9 is connected with one end of the resistor R8 and one end of the triode Q5 respectively, the other end of the triode Q5, the 3 end pin of the triode Q4 and the other end of the indicator lamp L10 are grounded, the indicator lamp L10 is a signal indicator lamp, the socket J4 is a fuel injector and electromagnetic valve socket, the pulse signal output by the chip U3 single-chip microcomputer drives the triode Q4 power tube after being amplified by the triode Q5, is output by the socket J4 socket, and is used for testing the fuel injector or the electromagnetic valve.

[0038] The PWM signal output socket 5 is provided with a resistor R16, a resistor R19, a triode Q6, a resistor R21, an indicator lamp L11 and a socket J5, the 1 end pin of the socket J5 is connected with one end of the resistor R16 and one end of the resistor R21 respectively, the other end of the resistor R21 is connected with one end of the indicator lamp L11, the other end of the resistor R16 is connected with one end of the resistor R19 and one end of the triode Q6 respectively, the other end of the indicator lamp L11, the other end of the triode Q6 and the 2 end pin of the socket J5 are grounded, the indicator lamp L11 is a signal indicator lamp, the socket J5 is a PWM signal output socket, and the pulse signal output by the chip U3 single-chip microcomputer is output by the socket J5 socket after being amplified by the triode Q6.

[0039] The IGBT module test socket 3 is provided with a resistor R25, a resistor R26, a triode Q7, a resistor R29, an indicator lamp L13, a resistor R23, an indicator lamp L12, a resistor R17 and a socket J6. The 1 end pin of the socket J6 is connected with one end of the resistor R17 and one end of the indicator lamp L12 respectively. The other end of the resistor R17 and the other end of the indicator lamp L12 are connected with two ends of the resistor R23 respectively. The 2 end pin of the socket J6 is connected with one end of the resistor R26 and one end of the resistor R29 respectively. The other end of the resistor R29 is connected with one end of the indicator lamp L13. The other end of the resistor R26 is connected with one end of the resistor R25 and one end of the triode Q7 respectively. The other end of the triode Q7, the other end of the indicator lamp L13 and the 3 end pin of the socket J6 are grounded. The indicator lamp L13 is a signal indicator lamp. The indicator lamp L12 is an IGBT module detection indicator lamp. The resistor R17 is a power 5W resistor with a resistance of 220 ohms. The socket J6 is an IGBT module socket. The 1 pin of the socket J6 is connected with a collector C of an IGBT module. The 2 pin is connected with a gate G of the IGBT module. The 3 pin is connected with an emitter E of the IGBT module. The chip U3 single-chip microcomputer outputs a pulse signal. After being amplified by the triode Q7, the pulse signal is output through the socket J6 socket to drive the IGBT module to work. The resistor R17 is a load of the measured IGBT module. If the internal circuit of the measured IGBT module is broken, the indicator lamp L12 does not light. If the IGBT module is short-circuited, the indicator lamp L12 is always on. The adjustable voltage is added to the collector of the triode Q7 through the resistor R25. The output signal voltage is adjustable from 1.2V to 12V. The opening voltage value of the measured IGBT module is tested by adjusting the adjustable voltage. The circuit not only tests the IGBT module, but also tests the IGBT single tube and the field effect tube.

[0040] The stepping motor test socket 4 is provided with a chip U4, a resistor R32, an indicator lamp L14, an indicator lamp L15, a resistor R33 and a socket J7. The socket J7 is connected with the chip U4 in parallel. The 4 end pin of the socket J7 is connected with one end of the indicator lamp L15. The other end of the indicator lamp L15 is connected with one end of the resistor R33. The 1 end pin of the socket J7 is connected with one end of the indicator lamp L14. The other end of the indicator lamp L14 is connected with one end of the resistor R32. The other end of the resistor R32, the other end of the resistor R33 and one end of the chip U4 are grounded. The chip U4 is a stepping motor special driving chip. The socket J7 is a stepping motor socket. The indicator lamp L14 and the indicator lamp L15 are stepping motor A phase and B phase signal indicator lamps respectively. The chip U3 single-chip microcomputer outputs a pulse control signal to the chip U4 stepping motor driving chip and drives the measured stepping motor through the socket J7 socket.

[0041] The application embodiment in use: the chip U3 is a single-chip microcomputer, has stored the program written well inside, 6 buttons are S1, S2, S3, S4, S5 and S6 respectively, LCD1 is a liquid crystal display, the indicator light L5, the indicator light L6, the indicator light L7, the indicator light L8 and the indicator light L9 are socket position indicator lights, are set beside each socket, the design realizes man-machine interaction through button and display screen, after selecting the function needed, the corresponding socket position indicator light is lighted up, the component needing testing is inserted on the corresponding socket, the resistance R3, the resistance R4, the triode Q2, the resistance R7, the indicator light L3 and the socket J2 form the positive trigger circuit of ignition coil, are used for testing positive trigger ignition coil (the power amplifier is integrated inside ignition coil), the indicator light L3 is positive trigger signal indicator light, the socket J2 is positive trigger ignition coil socket, the resistance R2, the resistance R5, the triode Q3, the triode Q1, the resistance R6, the indicator light L4 and the socket J3 form the negative trigger circuit of ignition coil, are used for testing negative trigger ignition coil (the power amplifier is not inside ignition coil), the indicator light L4 is negative trigger signal indicator light, the socket J3 is negative trigger ignition coil socket.The pulse signal output by the single-chip microcomputer U3 is input to the transistor Q2 and the transistor Q3, is amplified by the transistor Q2, and is output through the socket J2 for testing the positive trigger ignition coil. The pulse signal output by the single-chip microcomputer U3 is amplified by the transistor Q3, drives the transistor Q1 power tube, and is output through the socket J3 for testing the negative trigger ignition coil. The resistor R8, the resistor R9, the transistor Q5, the transistor Q4, the resistor R10, the indicator lamp L10, and the socket J4 form an oil injector and solenoid valve test circuit. The indicator lamp L10 is a signal indicator lamp, and the socket J4 is an oil injector and solenoid valve socket. The pulse signal output by the single-chip microcomputer U3 is amplified by the transistor Q5, drives the transistor Q4 power tube, and is output through the socket J4 for testing the oil injector or solenoid valve. The resistor R16, the resistor R19, the transistor Q6, the resistor R21, the indicator lamp L11, and the socket J5 form a PWM signal output circuit. The indicator lamp L11 is a signal indicator lamp, and the socket J5 is a PWM signal output socket. The pulse signal output by the single-chip microcomputer U3 is amplified by the transistor Q6, and the PWM signal is output through the socket J5. The resistor R25, the resistor R26, the transistor Q7, the resistor R29, the indicator lamp L13, the resistor R23, the indicator lamp L12, the resistor R17, and the socket J6 form an IGBT module test circuit. The indicator lamp L13 is a signal indicator lamp, and the indicator lamp L12 is an IGBT module detection indicator lamp. The resistor R17 is a 5W power resistor with a resistance of 220 ohms. The socket J6 is an IGBT module socket. The pin 1 of the socket J6 is connected to the collector C of the IGBT module, the pin 2 is connected to the gate G of the IGBT module, and the pin 3 is connected to the emitter E of the IGBT module. The pulse signal output by the single-chip microcomputer U3 is amplified by the transistor Q7 and is output through the socket J6 to drive the IGBT module to work. The resistor R17 is the load of the measured IGBT module. If the internal circuit of the measured IGBT module is broken, the indicator lamp L12 does not light up. If the IGBT module is short-circuited, the indicator lamp L12 is always on. The adjustable voltage is applied to the collector of the transistor Q7 through the resistor R25, and the output signal voltage is adjustable from 1.2V to 12V. By adjusting the adjustable voltage, the turn-on voltage value of the measured IGBT module is tested. The circuit not only tests the IGBT module but also tests the IGBT single tube and the field effect tube. The chip U4, the resistor R32, the indicator lamp L14, the indicator lamp L15, the resistor R33, and the socket J7 form a stepper motor driving circuit. The chip U4 is a stepper motor dedicated driving chip, the socket J7 is a stepper motor socket, and the indicator lamps L14 and L15 are signal indicator lamps for the A phase and the B phase of the stepper motor, respectively. The pulse control signal output by the single-chip microcomputer U3 is input to the chip U4, and the measured stepper motor is driven through the socket J7.

[0042] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multifunctional component testing device, comprising a housing (1), characterized in that: An IGBT module test socket (3), a stepper motor test socket (4), a PWM signal output socket (5), an injector solenoid valve test socket (6), a positive trigger ignition coil test socket (7), and a negative trigger ignition coil test socket (8) are fixedly mounted on the top of the front side of the housing (1) from right to left in sequence; a button (2) is fixedly mounted on one side of the bottom end of the front side of the housing (1); a display screen (11) is fixedly mounted in the middle of the bottom end of the front side of the housing (1); an adjustable voltage adjustment knob (10) is fixedly mounted on the other side of the bottom end of the front side of the housing (1); and an adjustable voltage output socket (9) located above the adjustable voltage adjustment knob (10) is fixedly mounted on the housing (1).

2. The multifunctional component testing device according to claim 1, characterized in that: The housing (1) is fixedly mounted with an IGBT module detection indicator light (12) located on one side of the IGBT module test socket (3); the housing (1) is fixedly mounted with an IGBT module socket position indicator light (23) and an IGBT module signal indicator light (24) located below the IGBT module test socket (3); the housing (1) is fixedly mounted with a stepper motor A phase signal indicator light (20), a stepper motor socket position indicator light (21), and a stepper motor B phase signal indicator light (22) located below the stepper motor test socket (4); the housing (1) is fixedly mounted with a PWM signal socket position indicator light located below the PWM signal output socket (5); A light (18) and a PWM signal indicator light (19) are fixedly mounted on the housing (1), and an injector solenoid valve position indicator light (16) and an injector solenoid valve signal indicator light (17) are located below the injector solenoid valve test socket (6). A positive trigger ignition coil signal indicator light (15) is fixedly mounted on the housing (1) and is located below the positive trigger ignition coil test socket (7). A negative trigger ignition coil signal indicator light (13) is fixedly mounted on the housing (1) and is located below the negative trigger ignition coil test socket (8). An ignition coil socket position indicator light (14) is fixedly mounted on the housing (1) and is located on one side of the negative trigger ignition coil signal indicator light (13).

3. The multifunctional component testing device according to claim 1, characterized in that: The adjustable voltage output socket (9) is provided with an adjustable voltage circuit and a voltage stabilizing circuit. The adjustable voltage circuit includes a chip U1, a capacitor C2, a capacitor C3, a diode D1, an indicator light L2, a variable resistor W1, a resistor R1, a capacitor C5 and a socket J1. One end pin of the socket J1 is respectively connected to one end of the variable resistor W1 and one end of the capacitor C5. The other end of the variable resistor W1 is respectively connected to one end of the indicator light L2 and one end of the resistor R1. The connection point between the variable resistor W1 and the resistor R1 and the other end of the indicator light L2 are both connected to one end of the chip U1. The two ends of the connection point between the indicator light L2 and the chip U1 are respectively connected to the two ends of the diode D1. The other end of the chip U1 is respectively connected to one end of the capacitor C2 and the two ends of the capacitor C3. The other end of capacitor C2, the other end of resistor R1, the other end of capacitor C5 and 2 ends of socket J1 are all grounded. The voltage stabilizing circuit includes chip U2, capacitor C4, diode D2, indicator light L1, capacitor C6 and capacitor C1. One end of the diode D2 and 2 ends of chip U2 are all connected to one end of indicator light L1, 3 ends of chip U2, one end of capacitor C6 and one end of capacitor C1 are all connected to the other end of indicator light L1, 1 end of chip U2 is connected to one end of capacitor C4, 8 ends of chip U2, 7 ends of chip U2, 6 ends of chip U2, 5 ends of chip U2, 4 ends of chip U2, the other end of diode D2, the other end of capacitor C6, the other end of capacitor C1 and the other end of capacitor C4 are all grounded.

4. The multifunctional component testing device according to claim 1, wherein: The positive trigger ignition coil test socket (7) is provided with a resistor R3, a resistor R4, a transistor Q2, a resistor R7, an indicator light L3 and a socket J2. Two end pins of the socket J2 are respectively connected to one end of the resistor R4 and one end of the indicator light L3. The other end of the resistor R4 is respectively connected to one end of the resistor R3 and one end of the transistor Q2. The other end of the indicator light L3 is connected to one end of the resistor R7. The other end of the resistor R7, the other end of the transistor Q2 and the three end pins of the socket J2 are all grounded.

5. The multifunctional component testing device according to claim 1, characterized in that: The negative trigger ignition coil test socket (8) is provided with a resistor R2, a resistor R5, a transistor Q3, a transistor Q1, a resistor R6, an indicator light L4 and a socket J3. Two end pins of the socket J3 are connected to one end pin of the transistor Q1. Two end pins of the transistor Q1 are respectively connected to one end of the resistor R5 and one end of the resistor R6. The other end of the resistor R6 is connected to one end of the indicator light L4. The other end of the resistor R5 and one end of the resistor R2 are both connected to one end of the transistor Q3. The other end of the indicator light L4, the other end of the transistor Q3, the three end pins of the transistor Q1 and the three end pins of the socket J3 are all grounded.

6. The multifunctional component testing device according to claim 1, characterized in that: The injector solenoid valve test socket (6) is provided with a resistor R8, a resistor R9, a transistor Q5, a transistor Q4, a resistor R10, an indicator light L10 and a socket J4. Two end pins of the socket J4 are connected to one end pin of the transistor Q4. Two end pins of the transistor Q4 are respectively connected to one end of the resistor R9 and one end of the resistor R10. The other end of the resistor R10 is connected to one end of the indicator light L10. The other end of the resistor R9 is respectively connected to one end of the resistor R8 and one end of the transistor Q5. The other end of the transistor Q5, the three end pins of the transistor Q4 and the other end of the indicator light L10 are all grounded.

7. The multifunctional component testing device according to claim 1, characterized in that: The PWM signal output socket (5) is provided with a resistor R16, a resistor R19, a transistor Q6, a resistor R21, an indicator light L11 and a socket J5. One end pin of the socket J5 is respectively connected to one end of the resistor R16 and one end of the resistor R21, the other end of the resistor R21 is connected to one end of the indicator light L11, the other end of the resistor R16 is respectively connected to one end of the resistor R19 and one end of the transistor Q6, and the other end of the indicator light L11, the other end of the transistor Q6 and two end pins of the socket J5 are all grounded.

8. The multifunctional component testing device according to claim 1, characterized in that: The IGBT module test socket (3) is provided with a resistor R25, a resistor R26, a transistor Q7, a resistor R29, an indicator light L13, a resistor R23, an indicator light L12, a resistor R17 and a socket J6. One end pin of the socket J6 is respectively connected to one end of the resistor R17 and one end of the indicator light L12, the other end of the resistor R17 and the other end of the indicator light L12 are respectively connected to two ends of the resistor R23, two end pins of the socket J6 are respectively connected to one end of the resistor R26 and one end of the resistor R29, the other end of the resistor R29 is connected to one end of the indicator light L13, the other end of the resistor R26 is respectively connected to one end of the resistor R25 and one end of the transistor Q7, the other end of the transistor Q7, the other end of the indicator light L13 and three end pins of the socket J6 are all grounded.

9. The multifunctional component testing device according to claim 1, characterized in that: The stepper motor test socket (4) is provided with a chip U4, a resistor R32, an indicator light L14, an indicator light L15, a resistor R33 and a socket J7. The socket J7 is connected in parallel with the chip U4. The four end pins of the socket J7 are connected to one end of the indicator light L15. The other end of the indicator light L15 is connected to one end of the resistor R33. The one end pin of the socket J7 is connected to one end of the indicator light L14. The other end of the indicator light L14 is connected to one end of the resistor R32. The other end of the resistor R32, the other end of the resistor R33 and one end of the chip U4 are all grounded.

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